Reddish brown watery poop

[Jillfisher09]

Can anyone tell me if this is normal chicken poop? Chicks are about 4 weeks old. (They were in a box because we were cleaning the brooder)

 

[BFen]

I am new to chicks (only had them for 4 weeks), and I've heard red is never a good sign, BUT that doesn't necessarily look like bloody poop. Personally chicks get so nervous when I clean their box, they start pooping like crazy and some times its runny. It's like they freak out and have the nervous shits (almost like people). I would keep an eye on it, but other people (who have had chickens longer) will know way better than me.